Final answer:
The impact of World War I on art was twofold: it made traditional forms of representation inadequate and led to the embrace of more nationalistic subject matter.
Step-by-step explanation:
The impact of World War I on social and cultural traditions that informed art was multifaceted.
Firstly, the immense loss of life and devastation caused by the war left a lasting impact on artists, making traditional ways of representing the world seem inadequate. Many artists turned away from the older conventions and sought new forms of expression to capture the disillusionment and a sense of irony felt by many.
Secondly, countries affected by the war turned inward and embraced more nationalistic subject matter. Art aimed to rally people around unified national identities, often depicting traditionally beautiful and patriotic themes.
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